# @Version : 1.0
# @Author : 刘皓
#使用str类型,分别保存 \n \t \r \\ 1 2 3 等字符 并且打印输出
n = "\n"
t = "\t"
r = "\r"
s = "\\"
one = "1"
two = "2"
three = "3"
print(n)
print(t)
print(r)
print(s)
print(one)
print(two)
print(three)